As early as the 1820s, the successes of the steamboat were clear. Steamboats played a vital role in opening the west and south to further settlement. They stimulated the agricultural economy of the west by providing better access to markets at a lower cost. Farmers quickly bought land near navigable rivers, because they could now easily ship their produce out. Villages at strategic points along the waterways evolved into centers of commerce and urban life. In the 1830s and 1840s, the port of New Orleans grew to lead all others in exports.